Speed Wedge MKII Radar speed sensor

Product Overview

Speed measurement for in-door and off-highway vehicles, conveyor belts, material flow

Speed Wedge MKII true ground speed sensor

Speed Wedge MKII is a speed sensor and active motion detector for moving objects, based on Radar Doppler technology. Speed Wedge MKII deploys a Radar Frontend with planar antennas continously emitting electro­magnetic waves at 24 GHz. Due to the move­ment of the sensor or the object the frequency of the back-scattered waves are doppler shifted.

The forward speed of e.g. an indoor transportation vehicle, fork lift, conveyor belt or off-highway vehicle is measured contactless thus unsusceptible to wheel / drive slip, effective tyre circum­ference and sinking in of the tyre. For demanding applications Speed Wedge MKII is sealed and potted in a rugged encasing.

Speed Wedge MKII is available as a Series device.



  • Measure­ment of speed and distance travelled indepen­dent on wheel / drive slip
  • High dynamics and signal update rate
  • Easy installation in parallel to the object being measured
  • Unsusceptible against varying properties of the ground surface
  • Pulse Output according to DIN 9684 / ISO 11786 and serial RS232
  • Basis for precise output application

Technical Data

Power supply +9 VDC to +28 VDC
Current consumption < 200 mA
Operating temperature -20 °C to +55 °C
Frequency and EIRP 24.15 to 24.25 GHz at 12.7 dBm EIRP
Output signal 130 Pulses / m (36,1 Hz km-1 h-1) acc. DIN 9684 / ISO 11786
and serial RS232
Output signal update rate 20 Hz
Speed range 0.8 km/h to 90 km/h
Sensor Configuration One Radar Frontend
System Accuracy 0.1 % F.R.
Dimensions - less cable, with flaps 55 mm wide, 110 mm long, 45 mm heigh
Connector molded M12 male plug, options t.b.d.
Vehicle Installation parallel to the object being measured
unobstructed view to the surface